You can find screenshots of this plan and video of construction here:http://clashlayouts.com/all-layouts/th-7/th-7-war/th7-war-base-layout-83-samantha-with-air-sweeper/
It will defend 2 star against dragon 1 and 3 against dragon 2, however there are not a lot of th7 bases that will defend against dragons lvl 2.
And 1 star in cw is not that bad ;)
Pretty good. Does it work against drags? One thing though. It would be pretty easy to get a one-star fifty percent because of the buildings outside the walls.